[PATCH V4 08/27] ublk: prepare for not tracking task context for command batch

Ming Lei
2025-11-21T01:59:43Z

batch io is designed to be independent of task context, and we will not
track task context for batch io feature.

Reviewed-by: Caleb Sander Mateos <csander@purestorage.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
drivers/block/ublk_drv.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index 1fcca52591c3..c62b2f2057fe 100644
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -2254,7 +2254,10 @@ static int __ublk_fetch(struct io_uring_cmd *cmd, struct ublk_device *ub,

ublk_fill_io_cmd(io, cmd);

- WRITE_ONCE(io->task, get_task_struct(current));
+ if (ublk_dev_support_batch_io(ub))
+ WRITE_ONCE(io->task, NULL);
+ else
+ WRITE_ONCE(io->task, get_task_struct(current));
ublk_mark_io_ready(ub);

return 0;
--
2.47.0